Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Summary of Long-term debt (Parentheticals) (Details)

v3.10.0.1
Long-Term Debt - Summary of Long-term debt (Parentheticals) (Details)
€ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2018
EUR (€)
Dec. 31, 2017
EUR (€)
$875.0 million senior secured revolving credit facility        
Debt Instrument [Line Items]        
Debt, principal amount | $ $ 875.0 $ 875.0    
$375.0 million Term Loan B        
Debt Instrument [Line Items]        
Debt, principal amount | $ 375.0 375.0    
Original issue discount | $ 0.7 0.9    
$700.0 million 4.750% senior unsecured notes        
Debt Instrument [Line Items]        
Debt, principal amount | $ $ 700.0 $ 700.0    
Interest rate 4.75% 4.75%    
662.9 million Norwegian Epic term loan        
Debt Instrument [Line Items]        
Debt, principal amount     € 662.9 € 662.9
308.1 million Pride of Hawaii loan        
Debt Instrument [Line Items]        
Debt, principal amount     308.1 308.1
529.8 million Breakaway one loan        
Debt Instrument [Line Items]        
Debt, principal amount     529.8 529.8
529.8 million Breakaway two loan        
Debt Instrument [Line Items]        
Debt, principal amount     529.8 529.8
590.5 million Breakaway three loan        
Debt Instrument [Line Items]        
Debt, principal amount     590.5 590.5
729.9 million Breakaway four loan        
Debt Instrument [Line Items]        
Debt, principal amount     729.9 729.9
666 million Seahawk 1 term loan        
Debt Instrument [Line Items]        
Debt, principal amount     666.0 666.0
666 million Seahawk 2 term loan        
Debt Instrument [Line Items]        
Debt, principal amount     € 666.0 € 666.0
Marina newbuild loan        
Debt Instrument [Line Items]        
Net unamortized premium | $ $ 0.1 $ 0.2    
Riviera newbuild loan        
Debt Instrument [Line Items]        
Net unamortized premium | $ $ 0.2 $ 0.2